The 2010 constitution of Kenya created 47 counties. Here is the list

1. Baringo County
2. Bomet County
3. Bungoma County
4. Busia County
5. Elgeyo Marakwet County
6. Embu County
7. Garissa County
8. Homa Bay County
9. Isiolo County
10. Kajiado County
11. Kakamega County
12. Kericho County
13. Kiambu County
14. Kilifi County
15. Kirinyaga County
16. Kisii County
17. Kisumu County
18. Kitui County
19. Kwale County
20. Laikipia County
21. Lamu County
22. Machakos County
23. Makueni County
24. Mandera County
25. Meru County
26. Migori County
27. Marsabit County
28. Mombasa County
29. Muranga County
30. Nairobi County
31. Nakuru County
32. Nandi County
33. Narok County
34. Nyamira County
35. Nyandarua County
36. Nyeri County
37. Samburu County
38. Siaya County
39. Taita Taveta County
40. Tana River County
41. Tharaka Nithi County
42. Trans Nzoia County
43. Turkana County
44. Uasin Gishu County
45. Vihiga County
46. Wajir County
47. West Pokot Count